Island



TOOL HANDLE.

Patented Oct. 2, 1883.

(No Model.) 0. M.'FAIRBANKS.-

INVE NT UR.

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WITNESSES- UNITED STATES PATENT. I OFFICE.

CRAWFORD M. FAIRBANKS, OF PAWTUCKET, RHODE ISLAND.

TOOL-HANDLE.

SPECIFICATION forming part of Letters Patent No. 285,802, dated October2, I883.

Application filed April 27, 1883. (N model.) A

To 00% whom itmay concern:

Be it known that I, CRAWFORD M. FAIR- BANKS, of Pawtucket, in thecountyof Provideuce and State of Rhode Island, have made certain new anduseful Improvements in Tool- Handles; and I do hereby declare that thefollowing specification, taken in connection with the drawings making apart of the same, is a full, clear, and exact description thereof.

Figurel is a section of the handle, showing the interior devicesforholding the too]. Fig. 2 is a view of the tool and holding devices,showing slight variation in construction. Fig. 3 is a section of theholder on line 00 ac.

The object of my invention is to produce a tool-handle which shall becapable of adjustment to all tools having tangs of the ordinary form nowin use; and it consists in the interior devices for that purpose,hereinafter described.

In the drawings, A, Figs. 1 and 2, is the tool, and B the handle. Thehandle Bis made hollow, as shown, and has near its rear end a nut, G,which is introduced by means of a. transverse passage, D. I

E is a holder having a screw tailpiece, F, and a head, G, slotted ormade in two prongs, chambered upon the inside, to receive and hold apair of eccentric rollers or balls, H, which are secured therein uponaxles passing through the head G.

The operation of my invention is asfollows: The tang I of the tool isinserted in the head G of the holder, passing between the eccentricrollers or balls H, whose construction and adjustrnent, as will bereadily seen, permit such introduction, when the whole is inserted inthe handle and the screw-thread upon the tailpiece F caused to engagethe nutC. As. the tool and holder are now rotated they will be drawndown into the handle until the shoulders J J upon either side of thetang I come in contact with the handle or ferrule upon the same. Anotherturn, or part of a turn, as may be necessary, will draw the shouldersand hold 4 5 them in solid contact with the handle and the tool securelyin place. The tang I having been placed between the eccentric rollers,as described, cannot be withdrawn by a pull in the line of thetool, sucha strain only serving to increase the grip of the eccentric rollers uponthe tang.

In Fig. 1 I show therollers but slightly ec centric, and provided withsprings K K, whose resistance tends to keep the rollers in contact withthe tang, while in Fig. 2 I have increased the eccentricity and rely onthe weight of the rollers to impinge the tang in the first instance.

The faces of the rollers H may be milled or otherwise roughened, if itshould be found nec essary.

When it is desired tail-piece is unscrewed by rotating the tool andholder in the opposite direction until released from the nut; or theprongs may be made to open after a slight elevation, and thus releasethe tang.

A tool-handle provided with the devices described is capable ofreceiving and holding tangs of the ordinary form, no alteration,

change, or special construction being required.

WVhat I claim as my invention, and desire to secure by Letters Patent,is

The combination of a handle provided wit a holding means, as O, for thetool-holder, with said tool-holder having eccentric rollers and thetool-tang inserted in the holder between said eccentric rollers and heldthereby, substantially as set forth.

0. M. FAIRBANKS.

to detach the tool, the

